Device is all joined in marriage to air current in blast furnace gas dry process dust removal box

The utility model provides a device is all joined in marriage to air current in blast furnace gas dry process dust removal box, annular gas flow distributor sets up between dust and gas chamber and ash bucket, is corresponding half clean gas branch pipe interface of dust removal box, and the clearance is left on its upper portion and the welding of dust removal box inner wall between lower part outer wall and the inner wall of the ash bucket, annular gas flow distributor upper portion is an awl section of thick bamboo, and the lower part be the drum, and its awl section of thick bamboo top edge and the welding of dust removal box inner wall division have water conservancy diversion hole two rows at least in drum department, annular gas flow distributor is fixed with the baffle at the opposite side that half clean gas branch pipe interface corresponds. Its advantage is that annular air flow distributor has blocked the efflux of introducing from half clean gas branch pipe interface and directly erodees the filt